The Q&A Archives: snapdragons

Question: Snapdragons were growing beautifully. Now they're attacked by zillions of black bugs that are stuck on the plant? scales? What to do?

Answer: Scales don't usually bother snapdragons and they don't show up in hordes overnight so I am fairly certain you are dealing with aphids. Zillions of black bugs could be black bean aphids. These can be controlled with insecticidal soap sprays or hosed off with a strong stream of water from the hose. Good luck with your plants!

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